I found a good deal on some brand new take off wheels and tires from a RZR 900. Brand new GBC dirt commander 27s and polaris aluminum wheels for $500. When test mounting the front tire I noticed that the offset is different and that the centering tabs for the steel wheels do not allow the rims to mount flush (the center opening in the aluminum wheel is smaller). I ordered a set of 1 inch wheel spacers but now I'm not sure if one inch will be enough to clear the original wheel lugs. Has anyone tried this before?
I am going from memory here so correct me if I am wrong, but I think the hole is stepped with the first 3/16 or so being the 156mm diameter and the step being smaller. I think if all else fails you can grind the tops of the locating tabs on the hubs down a very small amount and the spacers will work, or the wheels too except that the back spacing might be wrong without the spacers.
Worked fine with 1 inch spacers. No rubbing anywhere, lost a little bit of low end power but picked up 4 mph on the top (I ride on the street a lot). Tires are much less noisy on the road and steering is quicker. Haven't had a chance to try them in the dirt yet.